1-cyclopentyl-4-methyl-1H-pyrazolo[3,4-b]pyridin-6-yl 3-nitrobenzenesulfonate CAS 929972-81-6
| CAS No. | 929972-81-6 |
| Molecular Formula | C18H18N4O5S |
| Molecular Weight | 402.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-cyclopentyl-4-methyl-1H-pyrazolo[3,4-b]pyridin-6-yl 3-nitrobenzenesulfonate.
1-cyclopentyl-4-methyl-1H-pyrazolo[3,4-b]pyridin-6-yl 3-nitrobenzenesulfonate (CAS 929972-81-6), molecular formula C18H18N4O5S and molecular weight 402.42 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-cyclopentyl-4-methyl-1H-pyrazolo[3,4-b]pyridin-6-yl 3-nitrobenzenesulfonate (C18H18N4O5S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1-cyclopentyl-4-methyl-1H-pyrazolo[3,4-b]pyridin-6-yl 3-nitrobenzenesulfonate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H18N4O5S |
| Molecular Weight | 402.42 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related cyclopentyl Standards
- N-Cyclopentyl-2-[4-(5-ethyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]acetamide (CAS 1775421-20-9)
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Recommended Standards
- 1-(4-Fluorobenzoyl)-3,4-bis(4-methoxyphenyl)-1H-pyrazole (CAS 955975-67-4)
- 4-(1-Methylethoxy)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin (CAS 720667-00-5)
- (E)-3-((5-fluoro-2-methylphenyl)amino)-1-(3-(3-methoxyphenyl)benzo[c]isoxazol-5-yl)prop-2-en-1-one (CAS 383147-20-4)
- 4-(3-Fluoro-4-methylbenzoyl)-3-hydroxy-5-phenyl-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 618073-94-2)
- 9-azabicyclo[6.2.0]decan-10-one (CAS 4946-36-5)
- tert-Butyl 4-amino-1-azaspiro[5.5]undecane-1-carboxylate hydrochloride (CAS 1965309-66-3)
- tert-Butyl octahydro-1H-pyrrolo[3,4-c]pyridine-5-carboxylate hemioxalate (CAS 2173991-70-1)
- 2-(Furan-2-yl)-1-isopropylpiperidine (CAS 1355219-04-3)
- 1,1'-(Azanediylbis(methylene))bis(cyclopentan-1-ol) (CAS 1311569-65-9)
- (5-(2-Methoxyphenyl)pyridin-3-yl)methanol (CAS 887973-95-7)
- 3-Hydroxy-2-iodo-4-(trifluoromethyl)pyridine (CAS 1227580-34-8)
- (5-(((3-(Dimethylamino)propyl)amino)methyl)furan-2-yl)methanol (CAS 1340579-05-6)
- 2-Amino-6-chloro-8-iodo-[1,2,4]triazolo[1,5-a]pyridine (CAS 1935975-20-4)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
Why CATO?
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